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Stem A longitudinal axis upon which are borne the leaves, buds, and reproductive organs of the plant.
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茎：植物体着生叶、芽和繁殖器官的纵向轴状结构。 |
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Stem Drive – two-piece allows for replacement of yoke bushing inline, removal of handwheel without affecting position of valves (closed or opened).
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阀杆驱动-两件式，可在线更换轭架衬套，不需要影响阀门开关位置（关闭或开启）状态下拆卸手轮。 |
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Stem bearing to assure concentric stem rotation, allowing stem packing to provide maximum sealing effectiveness.
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阀杆轴承保证同轴阀杆的旋转，使得阀杆填料具有最大的密封效果。 |
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Stem cell debate in the Senate.
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在参议院，关于干细胞的争执一直不断。 |
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Stem cell-like subpopulation has been isolated and identified from hematopoietic system malignancies and solid tumors, and defined as cancer stem cells.
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在血液系统恶性肿瘤和实体瘤中均分离和鉴定出具有干细胞特征的细胞群，称之为肿瘤干细胞。 |
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Stem cells - cells that have the ability to divide for indefinite periods in culture and to give rise to specialized cells.
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干细胞－具有无限期分化并产生特定细胞能力的细胞。 |
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Stem cells are the cells responsible for making bodies, and then repairing the natural wear and tear to which they are subject while they are alive.
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干细胞是一类构成机体的细胞，并担负着修复其所在部位正常生理损伤的使命。 |
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Stem cells can be used to regenerate damaged organs and tissue because they are the earliest form of cells.
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干细胞还可以用于被损坏的细胞和组织的再生，因为它们是细胞的最初形式。 |
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Stem cells in the spinal cord have already been shown to have the capacity to make oligodendrocytes at low frequency.
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已有研究指出，脊髓里的干细胞有能力制造为数不多的寡突细胞。 |
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Stem cells make it possible to treat various human diseases owing to their self-renewal and the multiplex differentiation potential.
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摘要由于干细胞具有自我更新和多向分化潜能的功能，使得人们用干细胞治疗多种疾病成为可能。 |
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Stem made from hardened Monel K500 for strength and durability.
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阀杆采用硬化蒙乃尔合金K500，以增加强度和耐久性。 |
